Landau damping of surface plasmons in metal nanostructures
Landau damping of surface plasmons in metal nanostructures
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DOI：
10.1103/physrevb.94.235431
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发表时间：
2016-12-23
影响因子：
3.7
通讯作者：
Shahbazyan, Tigran V.
中科院分区：
文献类型：
--
作者：
Shahbazyan, Tigran V.
我们发展了一个任意形状金属纳米结构中表面等离子体激元朗道阻尼的量子力学理论。我们表明，电子表面散射，这有利于等离子体在小纳米结构的衰减，可以被纳入到金属介电函数与声子和杂质散射。导出的表面散射率是由相对于金属-电介质界面的局部场极化决定的，并且对系统的几何形状高度敏感。我们说明了我们的模型，提供一些常见形状的纳米结构的表面散射率的分析结果。我们的结果可用于计算热载流子产生率在光化学和光化学应用。
We develop a quantum-mechanical theory for Landau damping of surface plasmons in metal nanostructures of arbitrary shape. We show that the electron surface scattering, which facilitates plasmon decay in small nanostructures, can be incorporated into the metal dielectric function on par with phonon and impurity scattering. The derived surface scattering rate is determined by the local field polarization relative to the metal-dielectric interface and is highly sensitive to the system geometry. We illustrate our model by providing analytical results for surface scattering rate in some common shape nanostructures. Our results can be used for calculations of hot carrier generation rates in photovoltaics and photochemistry applications.